Abstract: An embodiment of wireless communication in a wireless sensor network (WSN) comprises selecting amount of information transmission from a sensor node utilizing a transmission parameter, wherein the transmission parameter indicates the amount of sensed information to discard from a transmission. Sensed information from a sensor node is transmitted based on the transmission parameter. Discarded sensor information is reconstructed at a receiver based on received sensor information and utilizing information correlation.

Abstract: A method includes decoding, by a receiver device, a spread spectrum coded stream of information including a multiple codeword blocks. The decoding includes determining a number of invalid codewords in a particular block of codewords. Based on a first particular number of invalid codewords in the particular block of codewords, the particular block of codewords is demapped, and parity codewords of the particular block of codewords are discarded. Based on a second particular number of invalid codewords in the particular block of codewords, a subset of syndrome components is computed using one or more coding enumerations with an update procedure for the subset of syndrome components, if all of the subset components are zero an erroneous bit is found, otherwise coding enumerations continue, the particular block of codewords is demapped, and parity codewords of the particular block of codewords are discarded.

Abstract: Embodiment herein provide a method and system of reporting cluster specific CSI feedback by user equipment (UE) to a cloud system. The UE associates with the cloud using a biased association or an unbiased association. In a biased association, a ratio between the highest received power from a Macro BS and a Pico base station is determined by the UE and compared with a threshold (bias). If the ratio is greater than the bias, the UE associates with the Pico BS. The UE reports CSI for a set of dominant Macro BSs and Pico BSs within a cluster. The UE can report the IDs of the BSs which contribute to dominant interference caused by the BSs of neighboring clusters.

Abstract: A method includes decoding, by a receiver device, a spread spectrum coded stream of information including a multiple codeword blocks. The decoding includes determining a number of invalid codewords in a particular block of codewords. Based on a first particular number of invalid codewords in the particular block of codewords, the particular block of codewords is demapped, and parity codewords of the particular block of codewords are discarded. Based on a second particular number of invalid codewords in the particular block of codewords, a subset of syndrome components is computed using one or more coding enumerations with an update procedure for the subset of syndrome components, if all of the subset components are zero an erroneous bit is found, otherwise coding enumerations continue, the particular block of codewords is demapped, and parity codewords of the particular block of codewords are discarded.

Abstract: Embodiment herein provide a method and system of reporting cluster specific CSI feedback by user equipment (UE) to a cloud system. The UE associates with the cloud using a biased association or an unbiased association. In a biased association, a ratio between the highest received power from a Macro BS and a Pico base station is determined by the UE and compared with a threshold (bias). If the ratio is greater than the bias, the UE associates with the Pico BS. The UE reports CSI for a set of dominant Macro BSs and Pico BSs within a cluster. The UE can report the IDs of the BSs which contribute to dominant interference caused by the BSs of neighboring clusters.

Abstract: An embodiment of wireless communication in a wireless sensor network (WSN) comprises selecting amount of information transmission from a sensor node utilizing a transmission parameter, wherein the transmission parameter indicates the amount of sensed information to discard from a transmission. Sensed information from a sensor node is transmitted based on the transmission parameter. Discarded sensor information is reconstructed at a receiver based on received sensor information and utilizing information correlation.

Abstract: A system (170) and method (300) for ray launching is provided. The system can include a transmitter (110) for successively launching a plurality of rays, and a receiver (120) for receiving transmission rays and reflection rays. A controller (141) can be included for selectively adjusting an angular spacing and eliminating rays in successive launches to focus an energy on the receiver. A method (430) of terminating rays for reducing computational complexity is provided. A method (340) for ray weighting for increasing a computational speed of ray propagation is provided. In one aspect, a quality of service (108) can be determined at the receiver based on ray propagation.

Abstract: An Orthogonal Frequency Division Multiplexer (OFDM) transmitter and receiver apparatus consistent with certain embodiments of the present invention receives data to be transmitted and maps (204) a first portion of the data to a first polarization state and a second portion of the data to a second polarization state. A first transmitter (216) transmits the first portion of the data as a set of first OFDM subcarriers using an antenna (230) exhibiting a first polarization. A second transmitter (234) transmits the second portion of the data as a set of second OFDM subcarriers using an antenna (240) exhibiting a second polarization, wherein the first polarization is orthogonal to the second polarization. A receiver apparatus uses a first antenna (302) exhibiting the first polarization and a second antenna (306) exhibiting the second polarization.

Abstract: A system (170) and method (300) for ray launching is provided. The system can include a transmitter (110) for successively launching a plurality of rays, and a receiver (120) for receiving transmission rays and reflection rays. A controller (141) can be included for selectively adjusting an angular spacing and eliminating rays in successive launches to focus an energy on the receiver. A method (430) of terminating rays for reducing computational complexity is provided. A method (340) for ray weighting for increasing a computational speed of ray propagation is provided. In one aspect, a quality of service (108) can be determined at the receiver based on ray propagation.

Abstract: A technique is used in a wideband wireless communication system (100). In some embodiments available channels are determined (310) and one is selected (315) for assignment to each of a set of communication units based on a relative frequency path loss for each available channel. In some embodiments a communication unit is assigned (505) a channel selected from among available channels and a relative signal loss parameter of the communication unit, such as transmit power, is adjusted (510), based on a relative frequency path loss determined from the channel frequency of the assigned channel. In other embodiments, transmit information is split (705) into a plurality of data streams, each characterized by an associated relative signaling sensitivity, and each data stream is assigned (715) to one of a plurality of the transmit channels, wherein data streams are assigned channels of decreasing channel frequencies in order of decreasing associated relative signaling sensitivities of the data streams.

Abstract: Communication systems include a transmitter that modulates a radio signal transmitted from two differently polarized antennas during a state time in which a wave state of the radio signal conveys information and is based on one or more polarization states selected from a constellation of polarization states comprising at least three polarization states. The communication system includes a receiver that intercepts the radio signal by two differently polarized antennas during the state time, and demodulates the signal. The polarization states may identify user devices or may quantify a portion of the information intended for a user device.

Abstract: An antenna system (205) includes an antenna structure (215), a receiver (220), and an antenna system controller (225). The antenna structure includes an arrangement of antennas (237), a signal combiner (240), and a switching matrix (235). The arrangement of antennas is designed to have a set of antenna element separations that are optimized to provide lowest correlation coefficients of intercepted radio signals for a corresponding set of electromagnetic environment types that vary from a very low density scattering environment to a maximum density scattering environment. The antennas (230), (231), (232), (233), (234) in the antenna arrangement each include at least one element that has a common polarization. There is at least one antenna that is a dual polarized antenna. The antenna system selects an antenna element pair that corresponds to the environment type which it is operating and thereby receives a best combined signal.

Abstract: A technique for constructing a dictionary word list for use in a data compressor is provided by determining a set of words that are included in the dictionary word list and sorting each subset of words having a common starting character by lengths of the words. Partitions are formed and identified based on the common starting character and word length, with each partition being stored in memory and indexed.

Abstract: An antenna system (205) includes an antenna structure (215), a receiver (220), and an antenna system controller (225). The antenna structure includes an arrangement of antennas (237), a signal combiner (240), and a switching matrix (235). The arrangement of antennas is designed to have a set of antenna element separations that are optimized to provide lowest correlation coefficients of intercepted radio signals for a corresponding set of electromagnetic environment types that vary from a very low density scattering environment to a maximum density scattering environment. The antennas (230), (231), (232), (233), (234) in the antenna arrangement each include at least one element that has a common polarization. There is at least one antenna that is a dual polarized antenna. The antenna system selects an antenna element pair that corresponds to the environment type which it is operating and thereby receives a best combined signal.

Abstract: Communication systems include a transmitter that modulates a radio signal transmitted from two differently polarized antennas during a state time in which a wave state of the radio signal conveys information and is based on one or more polarization states selected from a constellation of polarization states comprising at least three polarization states. The communication system includes a receiver that intercepts the radio signal by two differently polarized antennas during the state time, and demodulates the signal. The polarization states may identify user devices or may quantify a portion of the information intended for a user device.

Abstract: An Orthogonal Frequency Division Multiplexer (OFDM) transmitter and receiver apparatus consistent with certain embodiments of the present invention receives data to be transmitted and maps (204) a first portion of the data to a first polarization state and a second portion of the data to a second polarization state. A first transmitter (216) transmits the first portion of the data as a set of first OFDM subcarriers using an antenna (230) exhibiting a first polarization. A second transmitter (234) transmits the second portion of the data as a set of second OFDM subcarriers using an antenna (240) exhibiting a second polarization, wherein the first polarization is orthogonal to the second polarization. A receiver apparatus uses a first antenna (302) exhibiting the first polarization and a second antenna (306) exhibiting the second polarization.

Abstract: An FM demodulator in accordance with the present invention receives a composite signal from an antenna and corresponding processing circuitry. The composite signal includes a carrier signal having a voice/data signal modulated thereon. The composite signal is processed to separate the voice/data signal from the carrier signal. The voice/data signal is separated into an in-phase (I) signal and a quadrature (Q) signal. The Q signal is differentiated and then divided by the I signal to obtain the voice/data signal. Alternatively, I signal is differentiated and then divided by the Q signal to obtain the voice/data signal.

Abstract: An FM demodulator in accordance with the present invention receives a composite signal from an antenna and corresponding processing circuitry. The composite signal includes a carrier signal having a voice/data signal modulated thereon. The composite signal is processed to separate the voice/data signal from the carrier signal. The voice/data signal is separated into an in-phase (I) signal and a quadrature (Q) signal. The Q signal is differentiated and then divided by the I signal to obtain the voice/data signal. Alternatively, I signal is differentiated and then divided by the Q signal to obtain the voice/data signal.

Abstract: A multicarrier transmission system (100) routes data symbols from a data source (142) to a multicarrier modulator (145). Each modulator (201, 202, 203) within the multicarrier modulator (145) is coupled to a corresponding gain adjuster (211, 212, 213) that distributes the available transmit power across various subcarriers. Power distribution, is determined in part, upon the noise sensitivity of the transmitted information. In accordance, data stream symbols of like sensitivity are grouped (520) and transmitted during defined time intervals. Each such group is assigned a unique transmission power level (530). At any given moment in time, all subcarrier transmission power levels will have an identical amplitude, thereby mitigating the impact of subchannel-to-subchannel interference.

Abstract: A radio device requires a tunable transceiver such that the transceiver can be accurately set to a desired frequency. When a signal with known frequency accuracy is being received, an offset detector can determine the frequency offset generated by the transceiver due to improper tuning. An automatic frequency control (AFC) system (100) is comprised of a tunable transceiver, an offset detector (103) and an AFC control processor (105) for utilizing information from the offset detector to reduce the inaccuracy in frequency by tuning the transceiver towards the received signal frequency. The AFC control processor (105) utilizes one of more threshold levels for defining a maximum correction threshold (311) based upon the desired maximum offset correction. These thresholds are used by the AFC control processor (105) to efficiently control the predetermined frequency range of the tunable transceiver (101) for most efficient operation.